Graphene oxide, chitosan and silver nanocomposite as a highly effective antibacterial agent against pathogenic strains

Synergistic Antibacterial Activity of Silver-Loaded Graphene Oxide towards Staphylococcus Aureus and Escherichia Coli

“…This result was in agreement with that of Zhao et al, who prepared Ag NPs incorporated with GO that enhanced stability, significantly weakened the viability of bacteria, and improved the long-term antibacterial activity [62]. In the presence of CS, it was noted that CS has a positive charge, which enhances bonding with the negatively charged bacterial cell wall and therefore leads to larger cell damage [35,36]. By possessing CS as a stabilizer-mediated chemical, the Ag NPs assumed a well-ordered arrangement on the GO sheets [63].…”

“…For instance, Marta et al prepared GO/Ag composites grafted with CS to evaluate the bactericidal effect towards methicillin-resistant Staphylococcus aureus (S. Aureus) [35]. Khawaja et al proved that enhanced CS coating with GO-Ag NPs improved the inhibition zone (19-22 mm) compared with that of GO-Ag NPs only (15-18 mm) [36]. However, the Ag NPs' size effect before and after modifying with GO or the key factors between the three GO, Ag NPs, and CS components have not been well-discussed.…”

Graphenic Materials for Biomedical Applications

“…However, the antibacterial effect decreased in the following order: GO-CS-Ag > GO-Ag > GO-CS > GO. This result suggests that the newly developed GO-CS-Ag nanosystem can potentially be applied in biomaterials for biomedical and food purposes [58].…”

“…The main advantage of anchoring metal NPs on GR plates is an increase in electrical, electrochemical, optical, and thermal properties. The synthesis of Ag, Au, Cu, and Pt NPs of homogeneous size, as well as Au/Ag/Cu/Pt alloys embedded on GBMs surfaces, is usually performed by the chemical reduction of cationic metal ions (Ag + , Au 3+ , Cu 2+ , and Pt 4+ ) [52,58].…”

Poly(vinyl alcohol)–Carbon Nanodots Fluorescent Hydrogel with Superior Mechanical Properties and Sensitive to Detection of Iron(III) Ions

“…However, when the water content of hydrogels is more than 75 wt%, the hydrogel, obtained by the freezing/thawing method, cannot maintain strong mechanical performances, which limits the application of PVA hydrogel to some extent . The appearance of nanomaterials can further reinforce the mechanical properties of hydrogels and even provide various functions for hydrogels, such as antibacterial properties, photocatalytic activity, stimulating reaction behavior, and the like . Kashyap and co‐workers incorporated graphene oxide (GO) to PVA to prepare GO/PVA hydrogel, which increased the elastic modulus and tensile strength by 150%.…”